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Finding the Fourth Proportional to 1,890,846.78, 2,836,294.78 and 628,674.41

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Solution

The fourth proportional to 1,890,846.78, 2,836,294.78 and 628,674.41 is: 943,019.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890,846.78 : 2,836,294.78 = 628,674.41 : x
  2. Step 2: Convert to fraction form
    1,890,846.78/2,836,294.78 = 628,674.41/x
  3. Step 3: Cross multiply
    1,890,846.78x = 2,836,294.78 × 628,674.41
  4. Step 4: Simplify right side
    1,890,846.78x = 1,783,105,930,077.73
  5. Step 5: Solve for x
    x = 1,783,105,930,077.73/1,890,846.78
  6. Step 6: Final answer
    x = 943,019.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.